Glasswall is an industry leader in the realm of Content Disarm and Reconstruction (CDR) technology. Trusted and utilised by security conscious organisations ranging from the private sector (Oracle, Microsoft) to the public (NSA, NCSC), Glasswall provides advanced protection at the estate boundary. CDR is one of the most effective defence systems for zero-trust architectures as well as providing effective and consistent mitigation capabilities against 0-day threats.
Glasswall continuously innovates its CDR offerings to enhance both the existing defensive capabilities and progressively enhance both the threat intelligence and dynamic security capabilities of its users.
As a Senior Security Researcher, you will be working within the security research department which specialises in investigating and devising solutions to existing and potential threats related to CDR technology. Projects issued to this department can span security insight, threat intelligence, defensive testing, security engineering & development projects, full malware analysis/dissection projects and more. Projects are focused on full research and exploratory practices which may include activities such as vulnerability research (AppSec) and penetration testing. All actions are geared towards evaluating CDR capabilities against offensive techniques and cutting-edge practices and devising defensive solutions.
You will be expected to independently conduct research projects with a strong scientific process focusing on evidence-based conclusions based on project objectives. All work must be methodical and repeatable with technical information formatted tailored for external validation. You will be expected to provide a deep technical insight into the research you have conducted and effectively become the SME on such subjects as a result. In such a position you will be providing security insight into specific situations/incidents, software, formats or even malware variants that have been encountered.
As part of a small team of researchers, you will also be expected to participate and coordinate in group projects where needed and liaise with multiple departments of varying technical capabilities. You will report directly to the head of security research with scope in the future to manage your own group projects. As the SME of the research materials, you will be responsible for driving the adoption of findings via technical breakdown, development choices and evidence-backed demonstrations. This adoption will include developing and refining agentic working process for research and analysis operations based on your expertise and research. You will demonstrate your research to clients and interested third parties on request as the SME for the associated material. Where appropriate, you will also present your findings both internally and externally to industry expert audiences such as at conferences and via whitepaper publications. You will be expected to attend international industry leading events to acquire and evaluate industry trends and practices as they relate to Glasswall’s interests.
Responsibilities
- Conduct, either solo or collaboratively, security related research which explores and theorises potential security concerns related to project objective and verify them scientifically. This includes:
- Conduct literature reviews & process threat intelligence
- Conduct threat assessments
- Conduct feasibility assessments
- Perform scientific exploration and theorisation of potential security concerns and areas of focus for project objectives
- Determine viability of potential solutions
- Devise and where possible develop PoC samples and defensive solutions
- Prototype development and test solutions with a focus on objectives
- Provide reports and statistics on the viability of your proposed solutions with a focus on scientific accuracy.
- Professional responsibility and onus to verify findings and demonstrate materials as their own work whilst promoting the company’s reputation and security posture.
- Present findings both for internal and external consumption as presentations and professional whitepaper formats to targeted and general audiences.
- Be capable of providing technical insight across teams and audiences of varied technical experience.
- Perform research with a professional objective focus and awareness of resource consumption.
- Reliable to perform research as a solo exercise and conduct your own time management.
- Utilisation and development of AI capabilities to improve research processes with a focus on reliability
Required Knowledge, experience and values
- Degree in computer security course or computer specific course (2:1 or higher)
- Alternative qualifications/training will be considered on the basis of:
- Demonstration of conducted work/projects
- Demonstration of value of work related to industry
- Demonstration of publication and professionalism
- Demonstration of technical prowess and knowledge
- Professional experience in handling malware and associated practices
- Professional competency with the following tool categories:
- Static analysis
- Debugger
- Disassembler
- Hex/binary analysis
- Dynamic analysis
- Detonation chamber
- Network monitoring
- System monitoring
- Memory analysis
- Code management solutions
- Enterprise development IDE
- Static analysis
- Agentic AI process flow integration, validation and refinement
- Professional competency in the following coding languages:
- C++
- C#
- Python
- Reading level proficiency in Assembly focused on capacity to follow disassembler output
We encourage you to apply even if your experience is not a 100% match with the position.
Beneficial Knowledge, experience, and values
Preferred Qualifications:
- Master’s or PhD in an associated computing course
- Offensive security training certification from an accredited body:
- Offsec
- CREST
- GIAC
- Defensive security training certification from an accredited body:
- ISC2
- ISACA
- GIAC
Desired Skills & competencies:
- Offensive operation experience
- Red team
- Pen test
- Reverse Engineering
- Defensive system development experience
- Presentation experience
- Threat hunting
- Professional coding language proficiency:
- Rust
- JavaScript
- VBA
- Bash
- Korn
- Powershell
- Java
- Assembly
- AI skill and agent development
Experience:
- The individual applicant should have between 5+ years’ experience in the cyber security industry in roles which had a focus on investigatory/exploratory operations. This can include experience as a member of a SOC team, threat hunting team, penetration testing team, red team and any other related role. Experience must be demonstrably focused on the identification, evaluation, investigation and action processes related to cybersecurity objectives either defensive or offensive in nature.
About Us
We didn’t start out as a traditional security product. In the beginning, Glasswall was one of only two file sanitization filters in the US Intelligence Community’s highly classified networks. We are rated #1 by the National Security Agency. We designed Glasswall CDR to protect businesses against the most advanced file-based threats. Today, we’re trusted by commercial and government organisations around the world.
In June 2025 Glasswall officially entered a new era of growth and innovation having been acquired by the leading private equity firm, PSG Equity. This marks a significant milestone for our company and one that underscores the strength of our business, the dedication of our team, and the exciting potential that lies ahead.
With PSG’s strong track record of scaling high-growth cybersecurity and technology businesses, we are better positioned than ever to accelerate innovation, expand into new markets, and deliver even greater value to our clients, employees, and stakeholders.
Cybersecurity is a mission-critical field, and we’ve always believed that staying ahead means moving faster, continually adapting to meet new challenges and investing more boldly in the future. This partnership empowers us to do exactly that while maintaining the same leadership, values, and commitment to excellence that have brought us this far
We’re excited for what’s to come so now is a great time for you to join us on our journey.
Inclusion
At Glasswall we believe that diversity of people and thought are central to our purpose. We are committed to making Glasswall a company that is attractive to people of many different backgrounds. This includes diversity in every sense of the word: those with different backgrounds, ages, ethnicities, gender identities, sexual orientations, ways of thinking and those with disabilities or neurodivergent conditions. We therefore welcome and encourage applications from everyone, including those from groups that are under-represented in our workforce.
One of our corporate objectives is to ensure that the organisational health of the firm is highly rated by our employees. We believe that this is only possible if we promote a culture of inclusion and respect across our business. Every six months we survey employees on a range of questions relating to our organisational health. This holds a mirror-up to a business and ensures that we can focus on where we need to do better.
We have an Organisational Health Committee, which is chaired by a non-executive position. The panel has been formed to guide the leadership in taking positive action that supports a good work-life balance, family friendly relations and to be inviting to a diverse range of potential employees.
We also have a Women in Technology Group which has been formed to promote balance in the way that we communicate with, promote, encourage, and support people across our business.
Work/Life Balance
Our team puts a high value on work-life balance. It isn’t about how many hours you spend at home or at work; it’s about the flow you establish that brings energy to both parts of your life. We believe striking the right balance between your personal and professional life is critical to lifelong happiness and fulfilment. We offer flexibility in working hours and encourage you to find your own balance between your work and personal lives.
Salary and Benefits
- Glasswall offers a competitive salary and incentives package.
- We offer flexible and remote working options, with hybrid working from our office in the Central London area.
- Office travel and incidental WFH expense coverage.
- 25 days holiday (plus public holidays).
- Private Medical Insurance including mental health support and cancer care.
- Enhanced sick pay.
- Company sponsored life, critical illness, and income protection insurance.
- Contributory pension scheme.
- Access to ‘salary sacrifice’ benefits such as Cycle to Work and Tech Schemes.
A successful candidate will live in the United Kingdom and be comfortable working from home with some meetings being held in the London office.
We are looking for someone with relevant skills and experience, not a checklist that exactly matches the job description. We want to help you grow, and in return, you help us grow into a stronger, more inclusive organisation.
Glasswall is an equal opportunity employer and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, disability, age, or other legally protected status.